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Wyszukujesz frazę "Staw kolanowy" wg kryterium: Temat


Tytuł:
The sense of position and movement in the knee joint during voluntary movements
Autorzy:
Iwańska, D.
Urbanik, C.
Powiązania:
https://bibliotekanauki.pl/articles/306338.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
proprioreceptors
sense position
voluntary movements
staw kolanowy
dynamika
Opis:
The aim of the paper was to assess body position reproduction as well as jump height during an intended movement, together with an assessment of the influence of factors that disturb this process. Factors disturbing the jump were related to with the reproduction of different knee joint angles (90° or 120°); different muscle activity in performed jumps: SJ with no countermovement and CMJ with countermovement; as well as with and without visual (VC) of control movement (nVC) – eyes covered. Nineteen subjects aged twenty-one years participated in the experiment. Jump height (h) was calculated on the basis of a reaction force (R) of the base, as registered with a tensometric platform. Two-dimensional cinematographic analysis was used to assess the reproduction of angular position in the knee joint. A significant factor determining the level of position reproduction during voluntary movements was the imposed angle as well as the character of muscle activity. The biggest difficulty of developing maximum heights occurred during jumps with disturbed visual control (eyes shut).
Źródło:
Acta of Bioengineering and Biomechanics; 2013, 15, 3; 11-17
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling of the human knee joint supported by active orthosis
Autorzy:
Musalimov, V.
Monahov, Y.
Tamre, M.
Robak, D.
Sivitski, A.
Aryassov, G.
Penkov, I.
Powiązania:
https://bibliotekanauki.pl/articles/264620.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
staw kolanowy
biomechatronika
orteza
modelowanie
knee joint
active orthoses
biomechatronics
Opis:
The article discusses motion of a healthy knee joint in the sagittal plane and motion of an injured knee joint supported by an active orthosis. A kinematic scheme of a mechanism for the simulation of a knee joint motion is developed and motion of healthy and injured knee joints are modelled in Matlab. Angles between links, which simulate the femur and tibia are controlled by Simulink block of Model predictive control (MPC). The results of simulation have been compared with several samples of real motion of the human knee joint obtained from motion capture systems. On the basis of these analyses and also of the analysis of the forces in human lower limbs created at motion, an active smart orthosis is developed. The orthosis design was optimized to achieve an energy saving system with sufficient anatomy, necessary reliability, easy exploitation and low cost. With the orthosis it is possible to unload the knee joint, and also partially or fully compensate muscle forces required for the bending of the lower limb.
Źródło:
International Journal of Applied Mechanics and Engineering; 2018, 23, 1; 107-120
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mechatronic rehabilitation devices to re-education of the knee joint muscles
Autorzy:
Nowak, G.
Kubik, B.
Juszyński, Ł.
Wochnik, D
Sobiech, M.
Kowalski, P.
Michnik, A.
Powiązania:
https://bibliotekanauki.pl/articles/333819.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
rehabilitation
knee joint
thermotherapy
traction
rehabilitacja
staw kolanowy
termoterapia
trakcja
Opis:
Article is devoted to innovative, mechatronic devices. These devices enable the rapid and effective knee joint rehabilitation. The following machines are computer-assisted. The devices have been designed and constructed by the Institute of Medical Technology and Equipment ITAM in Zabrze, after consultation with specialists in the field of rehabilitation of the Silesian Rehabilitation Centre ”REPTY”.
Źródło:
Journal of Medical Informatics & Technologies; 2013, 22; 271-276
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The efficacy of mud pack treatment on ailments related to gonarthrosis
Wpływ terapii z zastosowaniem okładów borowinowych na dolegliwości związane z chorobą zwyrodnieniową stawu kolanowego
Autorzy:
Mika, Anna
Dąbal, Ewa
Mika, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/1935833.pdf
Data publikacji:
2006
Wydawca:
Akademia Wychowania Fizycznego im. Bronisława Czecha w Krakowie
Tematy:
osteoarthrosis
Knee
mud-pack
therapy
choroba zwyrodnieniowa
Staw kolanowy
borowina
leczenie
Opis:
Background: The aim of this study was to evaluate whether mud pack application as a supplementary treatment to physiotherapy and therapy with physical agents allow to achieve better outcome than physiotherapy and therapy with physical agents alone in patients suffering from gonarthrosis.Methods: Twenty patients aged 49 to 70 at II and III stage of gonarthrosis were divided into experimental and control groups each comprising 10 patients. The experimental group was treated by mud pack, exercises and therapy with physical agents, whereas the control group only by exercises and therapy with physical agents. The following parameters were evaluated in all patients before and two weeks after the therapy: range of motion in the knee, leg circumference, self-assessment of disease severity (using WOMAC questionnaire), and pain level (using VAS scale).Results: We observed that joint stiffness (assessed using WOMAC questionnaire) decreased significantly only in the experimental group (p<0.05). Significant decrease in pain level assessed by means of VAS scale was noticed in both groups (p<0.05). After the therapy, a significant improvement in knee flexion (p<0.05) was observed only in the control group.Conclusion: Both treatment modalities had similar effects on pain severity. Reduction of joints stiffness observed 2 weeks following the treatment may suggest that mud pack may be used as a supplementary component in the therapy of osteoarthrosis.
Cel: Celem niniejszej pracy było ustalenie czy zastosowanie okładów borowinowych jako elementu uzupełniającego kinezyterapię i fizykoterapię pozwoli uzyskać lepszy efekt terapeutyczny u pacjentów z chorobą zwyrodnieniową stawów kolanowych niż zastosowanie leczenia opartego tylko na kinezyterapii i fizykoterapii. Materiał i metoda: Badaniami objęto 20 kobiet w wieku 49-70 lat, u których stwierdzono II° i III° (wg klasyfikacji Seyfrieda) choroby zwyrodnieniowej stawu kolanowego. Wszystkich badanych losowo podzielono na dwie grupy: badaną (n=10) i kontrolną (n=10). W grupie badanej zastosowano: okłady borowinowe, kinezyterapię i fizykoterapię, a w kontrolnej tylko kinezyterapię i fizykoterapię. Pacjentów badano dwukrotnie: bezpośrednio przed rozpoczęciem leczenia i po 2 tygodniach w ostatnim dniu zabiegów. U każdego z badanych przeprowadzono pomiar: zakresu ruchomości w stawie kolanowym i obwodu kończyny, ocenę stopnia dolegliwości wynikających z choroby zwyrodnieniowej przy użyciu kwestionariusza WOMAC, oraz pomiar stopnia intensywności odczuwania bólu za pomocą skali VAS. Wyniki: Stwierdzono, iż odczuwana przez pacjentów sztywność w stawie (badana przy pomocy kwestionariusza WOMAC) statystycznie istotnie zmniejszyła się tylko w grupie badanej (p<0.05). Zauważono, iż w obu grupach po zastosowanej terapii nastąpiło statystycznie istotne zmniejszenie poziomu bólu (p<0.05), ocenianego za pomocą skali VAS. Po 2 tygodniach terapii statystycznie istotny przyrost w zakresie zgięcia (p<0.05) zaobserwowano tylko w grupie kontrolnej. Wnioski: Zarówno leczenie oparte tylko na kinezyterapii i fizykoterapii jak i model uzupełniony o okłady borowinowe wykazuje zbliżone działanie przeciwbólowe. Obserwowane po 2 tygodniach zabiegów obniżenie sztywności stawowej pozwala sugerować, że borowina może być włączona jako element uzupełniający terapię choroby zwyrodnieniowej stawów.
Źródło:
Medical Rehabilitation; 2006, 10(1); 57-66
1427-9622
1896-3250
Pojawia się w:
Medical Rehabilitation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ratios of torques of antagonist muscle groups in female soccer players
Autorzy:
Struzik, A.
Siemieński, A.
Bober, T.
Pietraszewski, B.
Powiązania:
https://bibliotekanauki.pl/articles/307148.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
staw kolanowy
asymetria
ścięgna
asymmetry
knee joint
hamstring-to-quadriceps ratio
Opis:
An increase in the value of the hamstring-to-quadriceps (H/Q) ratio with an increase in angular velocity may effectively prevent injuries of the back of the thigh. Previous studies have found that the conventional H/Q ratio was unaltered along with an increasing angular velocity in females. Therefore, this study aimed to investigate the relationships between the conventional H/Q ratio and angular velocity in a group of female soccer players. Methods: The study was carried out on a group of 16 female soccer players (age: 20.7 ± 3.9 years, body height: 166.1 ± 5.8 cm, body mass: 58.4 ± 6.2 kg, training experience: 8.8 ± 4.1 years). Measurements of peak torque of extensors and flexors of the knee joint under static conditions and under isokinetic conditions (at angular velocities of 30°/s, 60°/s, 90°/s and 120°/s) were carried out using a Biodex dynamometer. Results: There was a statistically significant increase in the conventional H/Q ratio with an increase in angular velocity. These differences occurred between measurements at angular velocities of 0°/s and 30°/s, and 30°/s and 60°/s. Conclusions: As previously found for males, an increase in conventional H/Q ratio with increased angular velocity was also present in this group of female players. This phenomenon should reduce the number of injuries of the muscles of back of the thigh. Coaches should pay attention to increasing the level of strength in the group of knee joint flexor muscles so as to make the value of the H/Q ratio appropriately high and increasing with increasing angular velocity.
Źródło:
Acta of Bioengineering and Biomechanics; 2018, 20, 1; 153-158
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnostic factors for opened and closed kinematic chain of vibroarthrography signals
Autorzy:
Machrowska, Anna
Karpiński, Robert
Krakowski, Przemysław
Jonak, Józef
Powiązania:
https://bibliotekanauki.pl/articles/118051.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
EMD
EEMD
knee joint
vibration
kinetic chain
staw kolanowy
wibracje
łańcuch kinetyczny
Opis:
The paper presents results of preliminary research of vibroarthrography signals recorded from one healthy volunteer. The tests were carried out for the open and closed kinematic chain in the range of motion 90° – 0° – 90°. Analysis included initial signal filtration using the EMD algorithm. The aim was to investigate the occurrence of differences in the values of selected energy and statistical parameters for the cases studied.
Źródło:
Applied Computer Science; 2019, 15, 3; 34-44
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microscopic tribological analysis of the knee joint
Mikroskopowa analiza tribologiczna w stawie kolanowym
Autorzy:
Ryniewicz, A. M.
Ryniewicz, A.
Pukaluk, A.
Pałka, P.
Powiązania:
https://bibliotekanauki.pl/articles/188937.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
knee joint
meniscus
articular cartilage
SEM
AFM
staw kolanowy
łąkotka
chrząstka stawowa
Opis:
The aim of the conducted research was the evaluation of the topography and the structure of the superficial layer of meniscus and articular cartilage. These are surfaces that optimise the friction and lubrication process in the knee joint. The animal samples of the menisci and the articular cartilage were examined. The research was performed using scanning electron microscopes and an atomic force microscope. The structure of the surface of meniscus and articular cartilage is very regular. The collagenous fibres, which are embedded in the ground substance, are parallel to the surface. The undulation of the surface was observed. In the area of the anterior horn on tibia side of both menisci as well as in the anterior area of tibial plateau, the concavity and convexity pattern is evident. The observed cavities enable the accumulation of the synovial fluid. The synovial fluid plays the role of the lubricant in the knee joint, and its presence is highly desired during the load transmission.
Celem przeprowadzonych badań była ocena topografii i struktury łąkotek oraz powierzchni stawowych, które zabezpieczają i optymalizują proces tarcia i smarowania w stawie kolanowym. Materiałem badań były łąkotki pobrane z prawidłowych stawów zwierzęcych oraz tkanka chrzęstna wypreparowana z powierzchni stawowych. Badania były realizowane na mikroskopach skaningowych oraz mikroskopie sił atomowych. Struktura warstwy wierzchniej chrząstki włóknistej oraz szklistej wykazała dużą regularność. Włókna kolagenowe biegnące równolegle do powierzchni i zatopione w substancji podstawnej tworzą łagodnie pofalowaną strukturę. Układ wgłębień i wzniesień jest najbardziej wyraźny na części przedniej plateau kości piszczelowej oraz w obszarze rogu przedniego łąkotek, po stronie kontaktującej się z plateau kości piszczelowej. W zaobserwowanych wgłębieniach może gromadzić się ciecz synowialna, która pełni rolę środka smarnego, i której obecność jest wysoce pożądana podczas przenoszenia obciążeń wewnątrz stawu kolanowego.
Źródło:
Tribologia; 2017, 273, 3; 147-154
0208-7774
Pojawia się w:
Tribologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of sound on standing postural stability in the elderly with and without knee osteoarthritis
Autorzy:
Hengsomboon, Pichaya
Hiengkaew, Vimonwan
Hsu, Wei-Li
Bovonsunthonchai, Sunee
Powiązania:
https://bibliotekanauki.pl/articles/306232.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
starzenie się
choroba zwyrodnieniowa
staw kolanowy
ageing
auditory
balance
knee osteoarthritis
sensory reweighting
Opis:
The aim of the study was to investigate the influence of sound on standing postural control in the elderly with and without knee osteoarthritis (knee-OA). Methods: Twenty-six elderly with knee-OA and 26 elderly without knee-OA who matched the age and height participated in this study. The standing postural stability was assessed by the 3D motion analysis system. Four testing conditions of the combination of sound (no sound and white noise sound) and surface (firm and soft surfaces) were tested three times with eyes closed for 30 sec. Postural stability variables included the standard deviation and velocity of the centre of pressure, the total body centre of mass, and centre of the head along the antero-posterior (AP) and medio-lateral (ML) directions. Results: Statistical significant reductions of all variables along ML direction were found in the elderly without a knee-OA in the presence of sound during standing on a firm surface. No significant effect of sound was found in the elderly with the knee-OA during standing on a firm surface. In the standing on a soft surface, both groups demonstrated no significant effect of sound on all postural stability variables. Conclusions: Application of sound improved the standing postural stability in the frontal plane for the elderly without knee-OA. However, the effect of sound was limited in standing on a soft surface for both elderly with and without knee-OA.
Źródło:
Acta of Bioengineering and Biomechanics; 2019, 21, 3; 99-108
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Isokinetic evaluation of knee joint flexor and extensor muscles after tibial eminence fractures
Autorzy:
Melzer, P.
Głowacki, M.
Głowacki, J.
Misterska, E.
Powiązania:
https://bibliotekanauki.pl/articles/307520.pdf
Data publikacji:
2014
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
leczenie chirurgiczne
ocena izokinetyczna
staw kolanowy
tibial eminence fracture
surgical treatment
isokinetic evaluation
Opis:
The aim of the study was the evaluation of knee joint function in adolescent patients following operative treatment – fixation via arthroscopic or open surgery (arthrotomy), due to tibial eminence fractures. 28 patients, aged from 7 to 16 years, treated operatively between 1994-2009 in four orthopeadic centres underwent evaluation. Evaluation was performed 12-180 months following surgery. Patients were divided into two groups depending on the operative treatment received. Group A consisted of 14 patients who underwent arthroscopic reduction and stabilization. Group B consisted of 14 patients who were treated by open reduction (artrothomy) and stabilization. The results of clinical and radiological examinations and isokinetic tests used in the evaluation declared that operative treatment due to tibial eminence fracture, regardless of surgical method used, does not significantly disrupt knee joint function resulting in a slight weakening of knee joint extensor muscle strength.
Źródło:
Acta of Bioengineering and Biomechanics; 2014, 16, 3; 111-118
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Manipulative robot for knee rehabilitation of patients with Ilizarov apparatus mounted on the thigh
Autorzy:
Krysiak, B.
Majchrzak, J.
Pazderski, D.
Sauer, P.
Powiązania:
https://bibliotekanauki.pl/articles/2063862.pdf
Data publikacji:
2014
Wydawca:
Międzynarodowe Stowarzyszenie na rzecz Robotyki Medycznej
Tematy:
robot manipulacyjny
rehabilitacja
staw kolanowy
aparat Ilizarowa
robotic manipulator
rehabilitation
knee joint
Ilizarov apparatus
Opis:
We present a new manipulative robotic system with 1 degree of freedom designed for increasing of the knee rehabilitation efficiency in case of patients with the femur distraction osteogenesis with use of Ilizarov apparatus. Based on the conducted analysis of the knee’s anatomy, biomechanical functionality of knee-joint and characteristics of considered medical treatment, overall assumptions concerning robotic assistance in knee rehabilitation process are formulated. Then we propose a simplified kinematic structure based on one rotational fixed axis taking into accountguidelines resulting from specificity of complications following a femur distraction osteogenesis with use of Ilizarov apparatus. The paper presents description of mechanical and measurement system for a considered manipulative robot. The issues regarding patient’s safety while realization of robotic rehabilitation are also discussed. Additionally, motion control and force control design issues are considered and some preliminary experimental results are presented.
Źródło:
Medical Robotics Reports; 2014, 3; 13--18
2299-7407
Pojawia się w:
Medical Robotics Reports
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design and characterization of a novel knee articulation mechanism
Autorzy:
Olinski, M.
Gronowicz, A.
Handke, A.
Ceccarelli, M.
Powiązania:
https://bibliotekanauki.pl/articles/265067.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
staw kolanowy
optymalizacja
eksperymenty numeryczne
knee joint
3 DOF linkage
synthesis
optimization
numerical experiments
Opis:
The paper is focused on designing a novel controllable and adjustable mechanism for reproducing human knee joint’s complex motion by taking into account the flexion/extension movement in the sagittal plane, in combination with roll and slide. Main requirements for a knee rehabilitation supporting device are specified by researching the knee’s anatomy and already existing mechanisms. A three degree of freedom (3 DOF) system (four-bar like linkage with controlled variable lengths of rockers) is synthesised to perform the reference path of instantaneous centre of rotation (ICR). Finally, a preliminary design of the adaptive mechanism is elaborated and a numerical model is built in Adams. Numerical results are derived from simulations that are presented to evaluate the accuracy of the reproduced movement and the mechanism’s capabilities.
Źródło:
International Journal of Applied Mechanics and Engineering; 2016, 21, 3; 611-622
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of acoustic signal processing methods in detecting differences between open and closed kinematic chain movement for the knee joint
Autorzy:
Karpiński, Robert
Machrowska, Anna
Maciejewski, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/118153.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
knee joint
kinetic chain
signals
articular cartilage
staw kolanowy
łańcuch kinetyczny
sygnały
chrząstka stawowa
Opis:
The paper presents results of preliminary research of analysis of signals recorded for open and closed kinematic chain in one volunteer with chondromalacia in both knees. The preliminary research was conducted in order to establish the accuracy of the proposed method and will be used for formulating further research areas. The aim of the paper is to show how FFT, recurrence plots and recurrence quantification analysis (RQA) can help in bioacoustic signals analysis.
Źródło:
Applied Computer Science; 2019, 15, 1; 36-48
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kinematic gait parameters changes in patients after total knee arthroplasty : Comparison between cruciate-retaining and posterior-substituting design
Autorzy:
Hajduk, G.
Nowak, K.
Sobota, G.
Kusz, D.
Kopeć, K.
Błaszczak, E.
Cieliński, Ł.
Bacik, B.
Powiązania:
https://bibliotekanauki.pl/articles/306649.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
staw kolanowy
endoprotezoplastyka
analiza lokomocji
total knee arthroplasty
gait analysis
cruciate retaining
posterior substituting
Opis:
Purpose: The patients expect optimal knee function after Total Knee Arthroplasty. It is necessary to apply appropriate surgical technique and supervised physical therapy. The optimal management of posterior cruciate ligament remains controversial. Both implant designs, i.e., cruciate retaining and posterior substituting, allow the orthopedic surgeon to achieve excellent clinical outcomes, as measured by commonly used questionnaires. Such methods of assessment may poorly reflect the functional status of patients. Therefore, three-dimensional gait analysis is recommended to evaluate the outcomes of surgical intervention. This study sought to determine differences in kinematic gait parameters and Knee Society Score between cruciate-retaining and posterior-substituting patients. Methods:23 individuals after cruciate-retaining total knee arthroplasty and 19 individuals after posterior-substituting total knee arthroplasty were subjected to gait analysis using three-dimensional motion capture system BTS Smart DX 7000. In addition, gait was assessed in 21 patients with knee osteoarthritis and in 30 healthy individuals. Results: The study did not reveal differences between cruciate-retaining and posterior-substituting groups, both in terms of Knee Society Score and kinematic gait parameters. There were also no differences in kinematic gait parameters between patients from the knee osteoarthritis group and total knee arthroplasty groups. The analyzed parameters in all of the groups differed significantly from those found in healthy individuals. Conclusions: Surgical technique and implant design do not affect values of kinematic gait parameters evaluated under natural walking speed. Several months after surgery the patients still demonstrated alterations in gait pattern, similar to those recorded in patients with knee osteoarthritis.
Źródło:
Acta of Bioengineering and Biomechanics; 2016, 18, 3; 137-142
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parameters estimation for the spherical model of the human knee joint using vector method
Autorzy:
Ciszkiewicz, A.
Knapczyk, J.
Powiązania:
https://bibliotekanauki.pl/articles/955119.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
staw kolanowy
symulacja komputerowa
biomechanika
model
knee joint
vector method
estimation
position and displacements
Opis:
Position and displacement analysis of a spherical model of a human knee joint using the vector method was presented. Sensitivity analysis and parameter estimation were performed using the evolutionary algorithm method. Computer simulations for the mechanism with estimated parameters proved the effectiveness of the prepared software. The method itself can be useful when solving problems concerning the displacement and loads analysis in the knee joint.
Źródło:
International Journal of Applied Mechanics and Engineering; 2014, 19, 3; 523-537
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The description of the human knee as four-bar linkage
Autorzy:
Dathe, H.
Gezzi, R.
Fiedler, Ch.
Kubein-Meesenburg, D.
Nägerl, H.
Powiązania:
https://bibliotekanauki.pl/articles/307351.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
staw kolanowy
anatomia
kinematyka kolana
human knee
anatomy
knee kinematics
four-bar linkage
analytical description
Opis:
Purpose: We investigate the dependence of the kinematics of the human knee on its anatomy. The idea of describing the kinematics of the knee in the sagittal plane using four-bar linkage is almost as old as kinematics as an independent discipline. We start with a comparison of known four-bar linkage constructions. We then focus on the model by H. Nägerl which is applicable under form closure. Methods: We use geometry and analysis as the mathematical methods. The relevant geometrical parameters of the knee will be determined on the basis of the dimensions of the four-bar linkage. This leads to a system of nonlinear equations. Results: The four-bar linkage will be calculated from the limits of the constructively accessible parameters by means of a quadratic approximation. Conclusions: By adapting these requirements to the dimensions of the human knee, it will be possible to obtain valuable indications for the design of an endoprosthesis which imitates the kinematics of the natural knee.
Źródło:
Acta of Bioengineering and Biomechanics; 2016, 18, 4; 107-115
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł

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